Consumers continue to shift Internet activities from desktop and laptop computers to mobile devices, especially smartphones. The latest mobile commerce data from m-commerce technology provider Branding Brand shows that the trend in retail toward mobile shopping is plowing ahead.

In January 2015, mobile devices generated 53% of a total 157 million online visits, an 18% increase from January 2014, when smartphones and tablets generated 45% of a total 155 million online visits, according to the monthly Branding Brand Mobile Commerce Index, which tracks 50 of the vendor’s more than 200 retailer clients. Comparing January 2014 to January 2015, the share of visits on desktops and laptops dropped from 55% to 47%, the share for tablets dropped 17% from 18% to 15%, and the share for smartphones jumped 41% from 27% to 38%, the index finds.

The revenue figures tell a similar story, with a tablet twist. Comparing January 2014 ($355 million total revenue) to January 2015 ($364 million total revenue), the share of revenue on desktops/laptops dropped from 81% to 76%, the share for tablets inched up from 11% to 12%, and the share for smartphones soared from 8% to 12%, the Branding Brand index says. Overall, mobile commerce revenue jumped from 19% to 24% of total web sales.

Conversion rates were up across the board. Comparing January 2014 to January 2015, the conversion rate on desktops/laptops inched up 3% from 3.03% to 3.13%, the conversion rate on tablets increased 10% from 2.04% to 2.24%, and the conversion rate on smartphones jumped 30% from 0.76% to 0.99%, the index says.

Follow Bill Siwicki, editor of the 2015 Internet Retailer Mobile 500 and editor, mobile, at Internet Retailer, at @IRmcommerce and at @MobileInsiderBS.